Imagecompressor.io - Tool to compress jpeg & png images online.
TinyJPG - Compress JPEG images with perfect quality and file size
Sirv - Dynamic image processing, hosting and rich-media for retailers and eCommerce.
CompressJpeg - Reduce the size of your images and select up to 100 images .Jpg with 100 mb max .
Ralpha Image Resizer - High-speed image batch conversion tool
TinyPNG - Make your website faster and save bandwidth. TinyPNG optimizes your PNG images by 50-80% while preserving full transparency!